Motorcycle exhaust pipes



FIG. 1 is an isometric view of the motorcycle exhaust pipes showing the new design;

FIG. 2 is a right elevational view thereof;

FIG. 3 is a left elevational view thereof; and,

FIG. 4 is a top plan view thereof.

The broken line showing of environment is for illustrative purposes only and forms no part of the claimed design. 

The ornamental design for a motorcycle exhaust pipes, as shown and described. 